https://spirallinux.github.io/
BTRFS, GUI Flatpak manager, Theming, nonfree codecs etc., printer support, timeshift preconfigured
Their goal is to make vanilla debian usable, with only debian tech. It is just a config, no “small distro dies and users need to switch”
Might not be the most secure (loose printer configs, preinstalled drivers for random stuff that is not normally a problem)
I am not sure, but it seems a lot is just already set up.
I agree that a good, cross-distro GUI for advanced configuration, is a better way to do this.